Celebrities reflect on Robin Williams' death at 63

FILE - This Nov. 18, 2006 file photo shows comedians Robin Williams, from left, Whoopi Goldberg and Billy Crystal posing after hoasting "Comic Relief" at Caesars Palace Hotel and Casino in Las Vegas, Nev. Williams, whose free-form comedy and adept impressions dazzled audiences for decades, has died in an apparent suicide. He was 63. The Marin County Sheriff’s Office said Williams was pronounced dead at his home in California on Monday, Aug. 11, 2014. The sheriff’s office said a preliminary investigation showed the cause of death to be a suicide due to asphyxia. (AP Photo/Keith Shimada, File)
The Associated Press

FILE - This Nov. 18, 2006 file photo shows comedians Robin Williams, from left, Whoopi Goldberg and Billy Crystal posing after hoasting "Comic Relief" at Caesars Palace Hotel and Casino in Las Vegas, Nev. Williams, whose free-form comedy and adept impressions dazzled audiences for decades, has died in an apparent suicide. He was 63. The Marin County Sheriff’s Office said Williams was pronounced dead at his home in California on Monday, Aug. 11, 2014. The sheriff’s office said a preliminary investigation showed the cause of death to be a suicide due to asphyxia. (AP Photo/Keith Shimada, File)

— "Robin was friend, boss, brother, inspiration. His generosity and intelligence knew no limits. Only his home planet could destroy him." — "Mrs. Doubtfire" co-star Harvey Fierstein, on Twitter.

— "I am absolutely heartbroken. Robin was a national treasure and a beautiful soul." — "The World According to Garp" co-star Glenn Close, in a statement.

— "I've never known a sweeter, brighter, more considerate person than Robin. Robin's commitment as an artist to lifting our mood and making us happy is compared to none. He loved us all and we loved him back." — "Old Dogs" co-star John Travolta, in a statement.

— "He always lit up when he was able to make people laugh, and he made them laugh his whole life long — tirelessly. He was one of a kind. There will not be another." — "Mrs. Doubtfire" co-star Sally Field, in a statement.

— "A big tenacious overflowing hyperkinetic eruption of compassion would be (the) best tribute to Williams." — "Lee Daniels' The Butler" co-star John Cusack, on Twitter.

— "Robin Williams was an airman, a doctor, a genie, a nanny, a president, a professor, a bangarang Peter Pan, and everything in between. But he was one of a kind. He arrived in our lives as an alien — but he ended up touching every element of the human spirit." — President Barack Obama, in a statement.